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Freelance · CMS sites · Web apps · AI automation

Jose D. Santos IVWebsites and web apps built to grow with you.

I build headless CMS sites, custom web applications and AI automations from reusable, tested components, so your product stays fast, accessible and easy to extend.

Front-end work for teams atSamsung R&DAmerican ExpressAXAUL Solutions

Portrait of Jose D. Santos IV

Cavite, PH

Front-end since 2014

UTC+8

Services

Best for: Teams that publish content often

Headless CMS websites

Marketing and content sites your team edits in a headless CMS, with a front-end that stays fast, accessible and on-brand.

  • Content models planned with your editors
  • Front-end in Next.js or React, built from reusable components
  • Responsive, accessible pages with SEO basics in place
  • Deployment to Vercel or Netlify
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Best for: Products that need a custom web app

Custom web development

Web applications in React, Next.js, Vite, Angular and TypeScript, from new features to full builds, backed by 12 years of front-end delivery.

  • Reusable component libraries and internal UI kits
  • Testing with Playwright and React Testing Library
  • Performance and state-management tuning
  • Migrations: UI/UX redesigns and framework transitions
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Best for: Teams that want AI in their product or workflow

AI automation

AI features and automated workflows built into your web app, using the same agent tools I rely on every day.

  • AI-powered features in React and Next.js apps
  • Integrations with AI model APIs and your existing services
  • Automating repetitive content and development tasks
  • Agent-assisted development with Claude Code and Pi
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Tech stack

The tools I reach for first on client and product work.

  • React
  • Next.js
  • TypeScript
  • Vite
  • Angular
  • Node.js
  • Tailwind CSS
  • Claude Code

Selected projects

Enterprise front-end work since 2019, from shared component libraries to a team-led 5G planner, plus this site.

  1. American Express (via Sysgen)

    Internal UI library

    Senior React Developer

    A shared component library for use across multiple applications, plus new features and Playwright end-to-end tests.

    Outcome: Reduced development time and improved consistency across the organisation.

    React · Playwright · Express
  2. UL Solutions (via Magnustech)

    agTable & image gallery

    Senior Front-end Developer

    A reusable data-table component on AG Grid, and a lazy-loading image gallery using blob storage and Intersection Observer.

    Outcome: Backed by a unit-test suite I wrote that reached 80% code coverage.

    AG Grid · Intersection Observer
  3. Samsung R&D Philippines

    RF Design Tool 5G

    Front-end team lead

    Led the front-end team that moved this 5G network web planner to a micro front-end architecture.

    Outcome: Improved maintainability and scalability.

    React · Micro front-ends

More work

  • ivjose.com

    This site

    Outcome: Lighthouse 100 in every category, and fully readable without JavaScript.

  • Centr & Emily Skye Fit

    Loup Fitness & Lifestyle Group

    Outcome: Improved development efficiency and code quality, with functionality and performance intact.

  • Health Start Lite

    AXA Philippines

    Outcome: Improved functionality and user experience.

Testimonials

Words from clients and collaborators.

  • Jose rebuilt our marketing site on a headless CMS. Our team now publishes pages without waiting on developers.

    Sample Name

    Marketing Lead, Example Co.

    Sample: faster publishing

  • He turned a messy set of screens into a component library we still build on. New features ship faster and look consistent.

    Sample Name

    Product Manager, Example Ltd.

    Sample: reusable UI

  • Clear communication across time zones, tested code, and no surprises at handover.

    Sample Name

    CTO, Example Startup

    Sample: smooth delivery

  • Jose added an AI workflow to our app that removed hours of manual content work every week.

    Sample Name

    Founder, Example Studio

    Sample: less manual work